GALNT18 and neoplasm: GALNT10 and GALNT18 are members of the GalNAc polypeptide N‐acetyl‐galactosaminyltransferases, which catalyse O‐linked glycosylation of mucin and can promote EGFR O‐glycosylation and subsequent AKT phosphorylation, leading to tumour proliferation.55, 56